/*

* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Sim monitoring class definition

*

*/

#ifndef CPESIMSTATEMONITOR_H

#define CPESIMSTATEMONITOR_H

//  INCLUDES

#include "pevirtualengine.h"

#include <e32base.h>

#include <e32property.h>

#include <startupdomainpskeys.h>

// FORWARD DECLARATIONS

class MPEPhoneModelInternal;

// CLASS DECLARATION

/**

*  This class monitors Sim state changes from System Agent.

*

*  @lib PhoneEngine.lib

*  @since Series60_4.0

*/

NONSHARABLE_CLASS( CPESimStateMonitor ) : public CActive

    {

    public: // Constants and data types

    // Monitored Sim event given to constructor

    enum TEvent

        {

        EEventSimStatus,

        EEventSimChanged

        };

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CPESimStateMonitor* NewL( 

            MPEPhoneModelInternal& aModel, 

            const TEvent aEvent );

        /**

        * Destructor.

        */

        virtual ~CPESimStateMonitor();

    public: // New functions

        /**

        * Gets Sim state.

        * @since Series60_4.0

        * @return Sim state

        */

        TPESimState SimState( ) const;

        /**

        * Completes this monitor for initialization purposes and starts monitoring

        * @since Series60_4.0

        */

        void Start();

    private: // Constructors 

        /**

        * C++ default constructor.

        */

        CPESimStateMonitor( MPEPhoneModelInternal& aModel, const TEvent aEvent );

        /**

        * By default EPOC constructor is private.

        */

        void ConstructL();

    private: // New functions

         /**

        * Converts and saves Sim state

        * @since Series60_4.0

        * @param aState Sim state from System Agent

        * @return result of checking valid values.

        */

        TBool SaveSimState( const TInt aState );

        /**

        * Starts monitoring

        * @since Series60_4.0

        */

        void StartMonitoring( );

    private: // From CActive

        /**

        * Implements cancellation of an outstanding request.

        */

        void DoCancel();

        /**

        * Handles request completion event.

        */

        void RunL();

    private: // Data

        // To send messages

        MPEPhoneModelInternal&  iModel;

        // The interface to Publish And Subscribe.

        RProperty iProperty;

        // To maintain Sim property

        TInt iSimState;

        // To handle startup logic, init value ETrue

        TBool iStartUp;

        // Select Sim property of interest

        TUint iPropertyKey;

    };

#endif // CPESIMSTATEMONITOR_H

// End of File